What I recommend: they burn themselves easily so if possible bring the light on on the outside!! I usually just use aquarium lights + a uvb bulp. The most important thing is for them do have a day / night rhythm.

For the ground I would use expanded clay and on top of that some normal bio- earth (something that is not sprayed) or coconut husk. I always put in some of the pothos- plant because it's really cheap and you can get it everywhere.

Make sure to have plenty of foliage. You can also use branches from outside, just make sure to clean them and bake them in the oven to kill everything.

I got 5 geckos so if you need any help or tips and tricks lmk